public virtual void setReferenceTargetElement(ModelElementInstanceImpl referenceSourceParentElement, Target referenceTargetElement)
{
ModelInstanceImpl modelInstance = referenceSourceParentElement.ModelInstance;
string identifier = referenceTargetAttribute.getValue(referenceTargetElement);
ModelElementInstance existingElement = modelInstance.getModelElementById(identifier);
if (existingElement == null || !existingElement.Equals(referenceTargetElement))
{
throw new ModelReferenceException("Cannot create reference to model element " + referenceTargetElement + ": element is not part of model. Please connect element to the model first.");
}
else
{
Source referenceSourceElement = modelInstance.newInstance(ReferenceSourceElementType);
setReferenceSource(referenceSourceParentElement, referenceSourceElement);
setReferenceIdentifier(referenceSourceElement, identifier);
}
}
